Anki Invalid Checksum Import Error

Hello, I have a 6.3 GB colpkg export I recently made after I tried to reinstall my OS. After installing the anki flatpak (version 2.1.54) it doesn’t import. Upon trying to import my collection I am greeted by an import error (see picture) stating one of the media images has an “Invalid Checksum.” I wanted to know how to fix this so I don’t lose all my cards as this is my only backup. Thanks in advance to anyone who knows how to debug this. I also posted this on reddit but haven’t gotten a response yet, sorry if I broke any rules or if this is an obvious error. Just looking for some help.
2022-07-25_17-50

That indicates your apkg file has been corrupted. apkg files are zip files, so you may be able to rename it and use a zip recovery tool to restore the file to a valid zip file (though probably with some data loss)

Thanks for the info! I’ll give it a try this weekend, hopefully I don’t lose too much…